Career
He was one of the founders of the Amsterdam College. The Collegiants were also often called Boreelists, and regarded as a small section In Ad legem et testimonium (1645), he argued the sola scriptura position that no religious authority other than the Bible should be acknowledged.
He was attacked by Johann Hornbeek (Apologia pro ecclesia Christiana non apostatica 1647), and by Samuel Maresius.
Boreel"s associates included Peter Serrarius, a fellow millenarian, Baruch Spinoza, who moved with the Collegiants after exclusion from the Amsterdam Jewish community, and Henry Oldenburg, a correspondent. Boreel was close also to John Dury.
Projects were a reconstruction of Solomon"s Temple and editions of the Mishnah.